[infinispan-issues] [JBoss JIRA] (ISPN-2297) Cache restart doesn't work properly

[Dan Berindei (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-2297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dan Berindei updated ISPN-2297:
-------------------------------

        Fix Version/s: 5.2.0.Alpha4
    Affects Version/s: 5.2.0.Alpha3
                       5.1.7.Final
          Component/s: Core API

    
> Cache restart doesn't work properly
> -----------------------------------
>
>                 Key: ISPN-2297
>                 URL: https://issues.jboss.org/browse/ISPN-2297
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Core API
>    Affects Versions: 5.1.7.Final, 5.2.0.Alpha3
>            Reporter: Dan Berindei
>            Assignee: Mircea Markus
>             Fix For: 5.2.0.Alpha4
>
>
> Cache restart has at least two issues:
> 1. If a cache is stopped via {{Cache.stop()}} it will still be returned by {{DefaultCacheManager.getCache()}}. Cache {{start()}} and {{stop()}} are not synchronized in any way, so a {{start()}} call may return before the cache was properly started - just because another thread is in the process of starting it.
> 2. {{ComponentRegistry}} keeps a few components as fields to speed up access. These components are destroyed on {{stop()}} and re-created on {{start()}}, because they are volatile, but the field references are not updated.
> Also, the documentation of {{EmbeddedCacheManager.getCache()}} should say that it will start the cache only if it doesn't exist yet - if the cache is stopped it will return the cache as it was. Alternatively we could change the behaviour of {{getCache()}} to always start the cache.

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